1200130320 has 40 divisors (see below), whose sum is σ = 3720404736. Its totient is φ = 320034688.

The previous prime is 1200130313. The next prime is 1200130339. The reversal of 1200130320 is 230310021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1200130296 and 1200130305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2500032 + ... + 2500511.

Almost surely, 2^1200130320 is an apocalyptic number.

1200130320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200130320 is an abundant number, since it is smaller than the sum of its proper divisors (2520274416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200130320 is a wasteful number, since it uses less digits than its factorization.

1200130320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000559 (or 5000553 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1200130320 is about 34642.8971074880. The cubic root of 1200130320 is about 1062.6970360303.

Adding to 1200130320 its reverse (230310021), we get a palindrome (1430440341).

The spelling of 1200130320 in words is "one billion, two hundred million, one hundred thirty thousand, three hundred twenty".